Computational Fluid Dynamic Analysis Of Heat Sinks Of Different Geometry

Abstract

The main aim of this investigation is to enhance the heat transfer rate of heat sink by reducing the base temperature of dif erent geometries of heat sink. Heat sink is a heat exchanger that is used to transfer heat generated with the use of a mechanical or an electronic device to the surroundings, because conductors help in conduction of heat from heated surface to the atmospheric air or surrounding air. Heat sinks are mostly used in laptops, computers etc. In this study while studying the heat transfer process it is observed that fins are used to extract heat from the system. Using fins in a system has a lot of benefits; it increases the ef iciency of the system by increasing the heat transfer rate and by reducing the running cost of the system. In this work there is a comparative study of heat transfer between dif erent geometries of heat sink using ANSYS fluent CFD version 16.0. To achieve this, a CFD model for plate fin heat sinks has been developed and validated with an experimental study from the literature. The study has shown that changing design have a notable ef ect on thermal performance of plate-fin heat sinks.It is also concluded that by making slots or holes in the plate finheat sink it increases the heat dissipation rate as we see that base temperature of slots and holes geometry is lesser than that of the simple palate fin geometry.One more thing which is observed is that not only by making slots and holes in the geometry it increases its heat dissipation rate but it also saves the material used in manufacturing of finswhich reduces the total initial cost of the system.